His sister left home in 1998, and __________ since.
| A．had not been heard of |
| B．has not been heard of |
| C．had not heard of |
| D．has not heard of |
— I went to see a film yesterday.
— Oh, did you? ______.
| A．So I did | B．I did so | C．So do I | D．So did I |
What great changes! It’s years since I ____ Chengdu last time.
| A． had left | B．left | C． have left | D．had been left |
Research shows that people feel unhappy and worried when they have nothing to do . _______, the happiest are those who are busy.
| A．In short | B．In fact | C．As a result | D．For one thing |
The first time you talk to a stranger, you should try to ______ him about the personal affairs.
| A．keep asking | B．keep to ask | C．avoid asking | D．avoid to ask |
— How about Thursday morning? Say, 10 o’clock?
— OK. I’ll be expecting you then.
| A．That’s settled. | B．Is that right? |
| C．How are you doing? | D．No way! |